what is the diameter of the exit end on these Y-Pipes?
will they mount to stock muffler? or which aftermarket exhausts will they mount to?
ie. Fujitsubo, Nismo, Greddy SP2 etc?

 

The Kinetix, Unlimited Racing and NFC Y-pipes are all 65mm at the collector flange (same as oem).

The Jic and futjsubo are 76.3mm at the collector flange.

All will mate up to all make's of systems down stream. But, it would not be wise to bolt up a 76.3mm output to a 65mm mid pipe downstream as you create a 1/4" high ring that abruptly interupts flow, especially important since exhaust gases tend to huge the tubing walls as they travel down the piping. A simple $20 transistion tube could be welded in to smoothly go from 76.3mm down to 65mm, to avoid a mismatch.

"All that's necessary for the forces of evil to win in the world is for enough good men to do nothing.”
Edmund Burke

G35 6mt

 

...Or a fujitsubo exhaust would compliment the JIC Y-Pipe nicely instead of a transition tube

<font color=blue>The above statements are only my take on the issue. If you disagree with anything I typed then you are 100% right!</font color=blue>

 

I really like the Fujitsubo exhuast for the sedan, but it is only 70mm. How well does it mate to the y-pipes?

I also like the Fujitsubo and JIC Y-pipes (the Ultimate is nice also), but someone needs to make a full 76mm y-pipe back exhuast to go with it....

2004 6MT Sedan-- Diamond Graphite
Stoptech 13" Brake kit-- Nismo S-tune Suspension
2003 Nissan 350Z--SOLD<P ID="edit"><FONT class="small"><EM>Edited by jran76 on 07/02/04 02:56 PM.</EM></FONT></P>

 

i e-mailed kinetix about 2-3 weeks ago, and they told me it should be out by now (2-3 weeks later, today). i guess i'll e-mail again . . .

 

look here: http://www.japtrix.com/customparts.htm

Bo
6M/T Coupe, DP/Willow, Premium, Al pedals, splash guards, Z-tube w/ K&N drop in, Fujitsubo Y-Pipe

 

Hello all G35 owners,

We are very happy and surprised to see this post. The Y-Pipe Prototype we have for the 350Z will fit the G35 as well. We have installed the actual item on a 350Z and put it on the Dynojet Machine, please refer to our post under My350Z.com for details. We will also do the same for G35 and get back to you guys with the results ASAP. Please feel free to contact us with your questions or comments. Thank you.


Regards,
Unlimited Tuning
EMail: info@unlimitedtuning.com

AIM: UnlimitedTuning
MSN: info@unlimitedtuning.com

 

Sorry, but 31 ft pds of torque and/or 15 HP at the wheels is utterly ridiculous from a Y pipe. It makes me really question your technique on the dyno.

It's a nice looking Y pipe but even if you showed 5 HP gains from a Y pipe alone I'd be suprised, but might believe the results. Other systems with similar Y pipes, and less severe bends, are showing 5-6 RWHP for the entire cat back system.



2004.5 Coupe/5AT/Ivory/Everything but front spoiler/Nismo CAI/Crawford V5/Crawford Cats/ Service Engine Soon

 

What he said.

Frankly, ignor manufacture hp claims and make decisions to buy on the merit of the part in comparison to the oem part it replaces. Since the oem part in question absolutley stinks, things aren't so bad. Providing is is priced sensibly (read less then Jic's $390 street price)

"All that's necessary for the forces of evil to win in the world is for enough good men to do nothing.”
Edmund Burke

G35 6mt

 

We have tried our best to provide as much information as we can on our Y-Pipe. One should analyze NOT only the amount of horsepower gained after the Y-Pipe, but perhaps the amount Torque as well as the Air/Fuel Ratio, which is one of the reason for the great increase. As we mention before we will run the same test on the G35 and share the results. We have also provided the Dyno Facility's information if anyone wants to verify. We try our best to manufacture a Y-Pipe that NOT only looks good, but well made and of course performance improvement. Please feel free to contact us with your questions or comments. Thanks.


Regards,
Unlimited Tuning

 

limanb, you referenced http://www.japtrix.com/customparts.htm. I can't get anywhere with that link. Are you sure it's valid? I have fairly high browser security settings so that could be the problem but I'm not sure.

I spoke to the local Japtrix shop in S. Florida (is this a nationwide company?) and they told me that they have proven HP increases of 11 HP across the RPM band with the Japtrix Y Pipe and Midpipe. I have also corroborated this with dyno results from folks at the local Z Club in Florida.

If they can get 11 HP proven gains across the powerband from these ~ $500 parts then I want in!



------------------------------------------------------------------------
When I die I want to go quietly in my sleep, like my grandmother. Not screaming in fear like the passengers in her car.

 

How can one y-pipe mid pipe combo gain 11 hp across the board when none of the others can? Does this make any sense? If you completely remove the cat back exhaust (keeping the cats on) do you honestly think you'd gain 11 hp "across the board"? I have my doubts...

<font color=blue>The above statements are only my take on the issue. If you disagree with anything I typed then you are 100% right!</font color=blue>

 

neff, take it for what it is. A ridiculous claim by a manufacturer trying to sell a new product. I laugh when I read the fine print "the above numbers may not yield the same results in your vehicle, blah, blah, blah"

2004 G35 Coupe/OB/Graphite interior/Premium and aero package/Popcharger/Z tube/Hotchkis sways/Tein H-tech springs/Kinetix plenum/Crawford cats

 

<blockquote><font class="small">In reply to:</font><hr>

I laugh when I read the fine print "the above numbers may not yield the same results in your vehicle, blah, blah, blah"


<hr></blockquote>

You're kidding... It actually says that? For that reason alone I would refuse to purchase that product or any other product made by that company. That's just wrong.

Personally, I like the way JIC and Crawford have dealt with me. JIC told me that they've dynoed their Y-Pipe by itself and with the exhaust. Every dyno run gained between 4 and 7 rwhp on the 350Z. That seems fair and honest. Doug at Crawford dynoes plenums on the 350Z and shows an "average" dyno chart of the gains. He doesn't show the "best" dyno chart he could rig up. Those are 2 businesses who have e-mailed and contacted me via phone and I like that!

Japtrix, schmaptrix...

<font color=blue>The above statements are only my take on the issue. If you disagree with anything I typed then you are 100% right!</font color=blue>

 

yeah, not sure what happened to the japtrix site. i have the fujitsubo y-pipe and the mufler shop built me a reducer to fit to the stock midpipe. i was looking at the japtrix mid-pipe at first, since it has the same pipe size as the fuji y-pipe. at $225, i decided to just let the mufler guy did it. i definitely love the sound of my mufler now. a little deeper than stock and a litle louder too. just perfect! as far as HP gain....well anything over 200 hp i think is a lot of power, so i dont care too much about what i gained in hp as long as i don't loose any. i don't race every time i drive to work or going home from work anymore. guess sign of old age....lol.

Bo
6M/T Coupe, DP/Willow, Premium, Al pedals, splash guards, Z-tube w/ K&N drop in, Fujitsubo Y-Pipe